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White cylindrical PTFE syringe filter with female Luer Lock inlet and male Luer Slip outlet

Lab Safety Supply Inc

Lab Safety Supply Inc 12K965 PTFE Syringe Filters 0.45 µm PK100

SKU CH-V1RQ-VGV2K

PTFE syringe filters with 0.45 µm pores, 25 mm housing, female Luer lock inlet and male Luer slip outlet, rated to 87 psi, pack of 100

  • Product typeAssortments & Kits
  • PTFE membrane resists harsh solvents for broad chemical compatibility
  • 45 µm pore size captures fine particles and microorganisms
  • Female Luer Lock inlet ensures secure, leak-free syringe connection
  • Male Luer Slip outlet allows quick attachment to downstream devices
  • Pack of 100 filters supports high-volume laboratory workflows

PTFE Syringe Filters for Laboratory Filtration

These PTFE syringe filters suit laboratory staff who need chemically resistant filtration for solvents and aggressive samples. The pack contains one hundred units, each with a 25 mm membrane diameter and a 0.45 µm pore size. They are supplied non-sterile for users who will sterilise downstream or work with non-sterile workflows.

Pressure Rating and Flow Characteristics

Each filter housing withstands a maximum operating pressure of 87 psi or 90 bar during normal use. The PTFE membrane and fiberglass construction handle high pressures without rupturing. A 100 mL maximum capacity per filter supports typical syringe volumes in analytical preparation.

Luer Lock and Luer Slip Connections

The female Luer lock inlet secures tightly to standard syringes, preventing leaks under pressure. The male Luer slip outlet allows quick attachment to tubing or collection vials. The 25 mm housing diameter fits common laboratory syringe sizes for day-to-day handling.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $118.99
Pricier than about 67% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameLAB SAFETY SUPPLY
Product typeAssortments & Kits

Questions about this item

How do I attach the filter to my syringe without cross-threading the 25 mm female luer lock inlet?

Align the female luer lock squarely on the syringe tip, turn clockwise until you feel the first click, then give one firm quarter-turn — over-tightening strips the threads and causes leaks.

When should I replace a filter during a 100 mL filtration run?

Swap to a fresh filter when flow slows noticeably or back-pressure approaches the 87 psi / 90 bar rating; the PTFE membrane and fiberglass pre-filter are single-use and not cleanable.

What pressure limit will I hit first if I push 100 mL through the 0.45 µm membrane continuously?

The 87 psi (90 bar) maximum operating pressure is the hard ceiling — exceeding it can rupture the 25 mm housing or blow the male luer slip outlet off.

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